Walkthrough for Perplex Room Escape

The 300th escape game from 123bee.com
You have been trapped inside this dining room and have to escape from the place. Use the clues and objects to come out of the room.

Click the drawers on the right, get the stopwatch and cassette from first and second drawer, zoom out.
Click the milk bottle on the right and add it to the inventory, zoom out.
Click the teddy bear above the drawers and add it to the inventory, zoom out.
Get the cutter and ring from the television stand, zoom out.
Click the painting on the wall, drag the cutter to it and get the paper piece, zoom out twice.
Click the computer, get the geometry box and zoom out.
Open the box in a new window, get the Ruler from it and close window.
Click the wall clock, add it to the inventory and open it in a new window.
Click and turn the clock and get the batteries, zoom out.
Click the bookshelf on the left.
Attach the Ruler, ring, milk bottle and stopwatch to it and solve the puzzle.Clue (150mm, 8000mg,2000m, 60m).
Get the audio player and drag the cutter to the red book on the left, get the paper piece and zoom out.
Open the audio player in a new window, insert the cassette to it and close window.
Click the window on the right, lift the blinds and click the window again.
Drag the audio player and place it near the window, press the play button.
Get the paper piece from the dove and zoom out.
Go right.
Get the green key from the floor, zoom out and go left.
Click the teddy bear to open a new window.
Insert key to it, get the paper piece and close window.
Click the cupboard in the view.
Stick the first 2 paper pieces to it and solve the puzzle, clues are as follow
(SAARC- SOUTH ASIAN ASSOCIATION FOR REGIONAL COOPERATION)
(MBBS- BACHELOR OF MEDICINE AND SURGERY) and get the led bulbs, zoom out.
Get back to the same view, now stick the remaining paper piece to it and solve the puzzle, clues are as follow
(UNO - UNITED NATIONS ORGANIZATION)
(NEWS - NORTH EAST WEST SOUTH) and get the wooden box.
Click the wooden box to open a new window, insert the battery.
Fix the LED bulbs to it and switch it on, note the colors(RED, YELLOW, BLUE, GREEN), close window.
Go right.
Click the main door and change the colors as per clue from the bulbs.